diff --git a/include/lowio_gpio.h b/include/lowio_gpio.h
new file mode 100644
index 0000000..683b097
--- /dev/null
+++ b/include/lowio_gpio.h
@@ -0,0 +1,9 @@
+/* Copyright (C) 2011, 2012 The uOFW team
+   See the file COPYING for copying permission.
+*/
+
+int sceGpioPortSet(int);
+int sceGpioPortClear(int);
+int sceGpioSetPortMode(int, int);
+int sceGpioDisableTimerCapture(int, int);
+
diff --git a/include/lowio_i2c.h b/include/lowio_i2c.h
new file mode 100644
index 0000000..f30885f
--- /dev/null
+++ b/include/lowio_i2c.h
@@ -0,0 +1,6 @@
+/* Copyright (C) 2011, 2012 The uOFW team
+   See the file COPYING for copying permission.
+*/
+
+int sceI2cMasterTransmit(int reg, void *buf, int bufSize);
+
diff --git a/include/lowio_sysreg.h b/include/lowio_sysreg.h
index f195827..f25f6d3 100644
--- a/include/lowio_sysreg.h
+++ b/include/lowio_sysreg.h
@@ -47,6 +47,8 @@ int sceSysregAudioClkSelect(int, int);
 int sceSysregAudioBusClockEnable(int);
 int sceSysregAudioIoEnable(int);
 int sceSysregAudioIoDisable(int);
+int sceSysregAudioClkoutClkEnable(void);
+int sceSysregAudioClkoutClkDisable(void);
 int sceSysregAudioClkoutClkSelect(int);
 int sceSysregAudioClkoutIoEnable(void);
 int sceSysregAudioClkoutIoDisable(void);
diff --git a/include/threadman_kernel.h b/include/threadman_kernel.h
index a4c2600..5dfd714 100644
--- a/include/threadman_kernel.h
+++ b/include/threadman_kernel.h
@@ -56,6 +56,7 @@ int sceKernelCreateMutex(char *, int, int, int);
 int sceKernelTryLockMutex(int, int);
 int sceKernelLockMutex(int, int, int);
 int sceKernelUnlockMutex(int, int);
+int sceKernelDeleteMutex(int);
 
 /* Event flags */
 
diff --git a/lib/build.mak b/lib/build.mak
index 46af939..707a7ee 100644
--- a/lib/build.mak
+++ b/lib/build.mak
@@ -16,7 +16,7 @@ EXPORT_OBJ=$(patsubst %.exp,%.o,$(PRX_EXPORTS))
 
 ifdef DEBUG
 CFLAGS += -DDEBUG
-LIBS := -ldebug -lpspdebug $(LIBS) -lSysclibForKernel -lsceDisplay -lsceGe_user -lIoFileMgrForUser -lsceSyscon_driver
+LIBS := -ldebug -lpspdebug $(LIBS) -lSysclibForKernel -lsceDisplay -lsceGe_user -lIoFileMgrForKernel -lsceSyscon_driver
 endif
 
 MODULE_STUBS=$(foreach mod,$(MODULES), $($(mod)_STUBS))
diff --git a/lib/libsceDdr_driver.a b/lib/libsceDdr_driver.a
index fc8b51d..eb0a1a4 100644
Binary files a/lib/libsceDdr_driver.a and b/lib/libsceDdr_driver.a differ
diff --git a/lib/libsceDmac.a b/lib/libsceDmac.a
index d7d6966..528efc2 100644
Binary files a/lib/libsceDmac.a and b/lib/libsceDmac.a differ
diff --git a/lib/libsceDmacplus_driver.a b/lib/libsceDmacplus_driver.a
index 13896d9..b7c1529 100644
Binary files a/lib/libsceDmacplus_driver.a and b/lib/libsceDmacplus_driver.a differ
diff --git a/lib/libsceGpio_driver.a b/lib/libsceGpio_driver.a
index 5906313..d5aba62 100644
Binary files a/lib/libsceGpio_driver.a and b/lib/libsceGpio_driver.a differ
diff --git a/lib/libsceI2c_driver.a b/lib/libsceI2c_driver.a
index cae443d..5777b48 100644
Binary files a/lib/libsceI2c_driver.a and b/lib/libsceI2c_driver.a differ
diff --git a/lib/libsceLcdc_driver.a b/lib/libsceLcdc_driver.a
index d382c03..812d2af 100644
Binary files a/lib/libsceLcdc_driver.a and b/lib/libsceLcdc_driver.a differ
diff --git a/lib/libsceNand_driver.a b/lib/libsceNand_driver.a
index 35d2b81..cfa8674 100644
Binary files a/lib/libsceNand_driver.a and b/lib/libsceNand_driver.a differ
diff --git a/lib/libscePwm_driver.a b/lib/libscePwm_driver.a
index a266171..4dc7752 100644
Binary files a/lib/libscePwm_driver.a and b/lib/libscePwm_driver.a differ
diff --git a/lib/libsceSysreg_driver.a b/lib/libsceSysreg_driver.a
index 4abebff..f436b4c 100644
Binary files a/lib/libsceSysreg_driver.a and b/lib/libsceSysreg_driver.a differ
diff --git a/src/audio/audio.c b/src/audio/audio.c
index 1efa089..53dcbeb 100644
--- a/src/audio/audio.c
+++ b/src/audio/audio.c
@@ -855,7 +855,7 @@ int sceAudioInit()
 {
     //dbg_init(1, FB_AFTER_DISPLAY, FAT_AFTER_FATMS);
     //dbg_init(1, FB_NONE, FAT_AFTER_FATMS);
-    dbg_init(1, FB_NONE, FAT_HARDWARE);
+    dbg_init(1, FB_NONE, FAT_AFTER_FATMS);
     dbg_printf("Running %s\n", __FUNCTION__);
     memset(&g_audio, 0, sizeof(g_audio));
     // 1558
diff --git a/src/codec/Makefile b/src/codec/Makefile
index b84f5f3..0d7f765 100644
--- a/src/codec/Makefile
+++ b/src/codec/Makefile
@@ -4,5 +4,7 @@
 TARGET = codec
 OBJS = codec.o
 
+LIBS = -lThreadManForKernel -lsceSysEventForKernel -lsceI2c_driver -lsceSysreg_driver -lsceGpio_driver
+
 include ../../lib/build.mak
 
diff --git a/src/codec/codec.c b/src/codec/codec.c
index fbcc0ce..510cf3c 100644
--- a/src/codec/codec.c
+++ b/src/codec/codec.c
@@ -1,6 +1,11 @@
 #include "common.h"
 
+#include "codec.h"
+#include "lowio_gpio.h"
+#include "lowio_i2c.h"
+#include "lowio_sysreg.h"
 #include "sysmem_sysevent.h"
+#include "threadman_kernel.h"
 
 typedef struct
 {
@@ -66,6 +71,8 @@ SceSysEventHandler g_sysEv = {
 };
 
 PSP_MODULE_INFO("sceWM8750_Driver", PSP_MODULE_NO_STOP | PSP_MODULE_SINGLE_LOAD | PSP_MODULE_SINGLE_START | PSP_MODULE_KERNEL, 1, 7);
+PSP_MODULE_BOOTSTART("sceCodecInitEntry");
+PSP_MODULE_REBOOT_BEFORE("sceCodecStopEntry");
 PSP_SDK_VERSION(0x06060010);
 
 int sub_0000(int reg, int set)
@@ -466,8 +473,10 @@ void sceCodec_driver_376399B6(int enable)
         sceSysregAudioClkoutClkEnable();
 }
 
-int module_start()
+int sceCodecInitEntry()
 {
+    for (;;)
+        ;
     sub_0110();
     sub_0150(1);
     g_codec.mutexId = sceKernelCreateMutex("SceCodec", 1, 0, 0);
@@ -496,7 +505,7 @@ int sceCodec_driver_FC355DE0()
     return 0;
 }
 
-int module_reboot_before()
+int sceCodecStopEntry()
 {
     sub_01FC(-1, -1, -1, -1);
     sceKernelUnregisterSysEventHandler(&g_sysEv);
diff --git a/src/codec/exports.exp b/src/codec/exports.exp
index e2b148f..3ebc0a8 100644
--- a/src/codec/exports.exp
+++ b/src/codec/exports.exp
@@ -5,7 +5,7 @@ PSP_EXPORT_START(syslib, 0x0000, 0x8000)
 PSP_EXPORT_FUNC_HASH(module_start)
 PSP_EXPORT_FUNC_HASH(module_reboot_before)
 PSP_EXPORT_VAR_HASH(module_info)
-PSP_EXPORT_VAR_NID(syslib_11B97506, 0x11B97506)
+PSP_EXPORT_VAR_HASH(module_sdk_version)
 PSP_EXPORT_END
 
 PSP_EXPORT_START(sceCodec_driver, 0x0011, 0x0001)
@@ -22,7 +22,7 @@ PSP_EXPORT_FUNC_HASH(sceCodecInitEntry)
 PSP_EXPORT_FUNC_NID(sceCodecSetVolumeOffset, 0xD27707A8)
 PSP_EXPORT_FUNC_NID(sceCodecSelectVolumeTable, 0xE4456BC3)
 PSP_EXPORT_FUNC_NID(sceCodec_driver_E61A4623, 0xE61A4623)
-PSP_EXPORT_FUNC_NID(sceCodec_driver_EACF7284, 0xEACF7284)
+PSP_EXPORT_FUNC_NID(sceCodecSetSpeakerVolume, 0xEACF7284)
 PSP_EXPORT_FUNC_NID(sceCodec_driver_FC355DE0, 0xFC355DE0)
 PSP_EXPORT_FUNC_NID(sceCodec_driver_FCA6D35B, 0xFCA6D35B)
 PSP_EXPORT_END
diff --git a/src/ctrl/ctrl.c b/src/ctrl/ctrl.c
index d15b3d5..a083a01 100644
--- a/src/ctrl/ctrl.c
+++ b/src/ctrl/ctrl.c
@@ -1214,17 +1214,17 @@ static int _sceCtrlVblankIntr(int subIntNm __attribute__((unused)), void *arg __
     int suspendFlag;
     int retVal;
     
-    dbg_printf("In function: %s\n", __FUNCTION__);
+    //dbg_printf("In function: %s\n", __FUNCTION__);
     
     suspendFlag = sceKernelCpuSuspendIntr(); //0x00000454
     
     if (ctrl.btnCycle == 0) { //0x00000464
-        dbg_printf("sysconHwDataTransferBusy VALUE: %d in function: %s\n", ctrl.sysconHwDataTransferBusy, __FUNCTION__);
+        //dbg_printf("sysconHwDataTransferBusy VALUE: %d in function: %s\n", ctrl.sysconHwDataTransferBusy, __FUNCTION__);
         if (ctrl.sysconHwDataTransferBusy == FALSE) { //0x00000470
             if (ctrl.pollMode != PSP_CTRL_POLL_NO_POLLING) { //0x0000047C
                 ctrl.sysconHwDataTransferBusy = TRUE; //0x000004E0
 
-                dbg_printf("receiving SYSCON data: %s\n", __FUNCTION__);
+                //dbg_printf("receiving SYSCON data: %s\n", __FUNCTION__);
                 if ((ctrl.samplingMode[USER_MODE] | ctrl.samplingMode[KERNEL_MODE]) == PSP_CTRL_INPUT_DIGITAL_ONLY) { //0x000004E4
                     ctrl.sysPacket[0].tx_cmd = SYSCON_CTRL_TRANSFER_DATA_DIGITAL_ONLY; //0x000004E8
                 }
@@ -1233,35 +1233,35 @@ static int _sceCtrlVblankIntr(int subIntNm __attribute__((unused)), void *arg __
                 }
                 ctrl.sysPacket[0].tx_len = 2; //0x00000514
 
-                dbg_printf("calling sceSysconCmdExecAsync: %s\n", __FUNCTION__);
+                //dbg_printf("calling sceSysconCmdExecAsync: %s\n", __FUNCTION__);
                 retVal = sceSysconCmdExecAsync(&ctrl.sysPacket[0], 1, _sceCtrlSysconCmdIntr1, 0); //0x00000510
-                dbg_printf("called sceSysconCmdExecAsync returns: 0x%08X in function: %s\n", retVal, __FUNCTION__);
+                //dbg_printf("called sceSysconCmdExecAsync returns: 0x%08X in function: %s\n", retVal, __FUNCTION__);
                 if (retVal < 0) { //0x00000518
                     ctrl.sysconHwDataTransferBusy = FALSE; //0x0000051C
                 }
             }
             else {
-                dbg_printf("set alarm handler_1: %s\n", __FUNCTION__);
+                //dbg_printf("set alarm handler_1: %s\n", __FUNCTION__);
                 
                 //register an alarm occurring every 700 micro seconds
                 sceKernelSetAlarm(700, _sceCtrlDummyAlarm, NULL); //0x00000490
             }
         }
         else {
-            dbg_printf("set alarm handler_2: %s\n", __FUNCTION__);
+            //dbg_printf("set alarm handler_2: %s\n", __FUNCTION__);
             sceKernelSetAlarm(700, _sceCtrlDummyAlarm, NULL); //0x00000490
         }
     }
     if (ctrl.unk_Byte_2 != 0) { //0x000004A0
-        dbg_printf("calling sceKernelPowerTick: %s\n", __FUNCTION__);
+        //dbg_printf("calling sceKernelPowerTick: %s\n", __FUNCTION__);
         ctrl.unk_Byte_2 = 0; //0x000004A4
         sceKernelPowerTick(SCE_KERNEL_POWER_TICK_DEFAULT); //0x000004CC
     }
 
-    dbg_printf("resuming all interrupts: %s\n", __FUNCTION__);
+    //dbg_printf("resuming all interrupts: %s\n", __FUNCTION__);
     sceKernelCpuResumeIntr(suspendFlag); //0x000004A8
     
-    dbg_printf("returning from %s.\n", __FUNCTION__);
+    //dbg_printf("returning from %s.\n", __FUNCTION__);
     return -1;
 }
 
@@ -1964,6 +1964,7 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
         return SCE_ERROR_NOT_SUPPORTED;
     }
     oldK1 = pspShiftK1();
+    dbg_printf("%d\n", __LINE__);
 
     if (!pspK1PtrOk(pad)) { //0x00001EF0 -- protect kernel address from user mode
         pspSetK1(oldK1);
@@ -1980,9 +1981,12 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
             return SCE_ERROR_NOT_SUPPORTED;
         }
     }
+    dbg_printf("%d\n", __LINE__);
     //waiting for the VSYNC callback when using the "read" functions.
     if (mode & 2) { //0x00001F10 && 0x00001F28
+        dbg_printf("%d\n", __LINE__);
         res = sceKernelWaitEventFlag(ctrl.eventFlag, 1, SCE_EVENT_WAITOR, NULL, NULL); //0x00001F44
+        dbg_printf("%d\n", __LINE__);
         if (res < 0) { //0x00001F4C
             pspSetK1(oldK1); //0x00001F50
             return res;
@@ -1992,30 +1996,37 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
         
         /* Clear the event flag to wait for the VBlank interrupt the next call. */
         sceKernelClearEventFlag(ctrl.eventFlag, 0xFFFFFFFE); //0x00001F64
+        dbg_printf("%d\n", __LINE__);
 
         startBufIndex = intDataPtr->ctrlBufStartIndex; //0x00001F70
         readIntBufs = intDataPtr->ctrlBufIndex - startBufIndex; //0x00001F74
         if (readIntBufs < 0) { //0x00001F7C
             readIntBufs += 64; //0x00001F78 & 0x00001F80
         }
+        dbg_printf("%d\n", __LINE__);
         intDataPtr->ctrlBufStartIndex = intDataPtr->ctrlBufIndex; //0x00001F8C
         if (reqBufReads < readIntBufs) { //0x00001F88
+            dbg_printf("%d\n", __LINE__);
             startBufIndex = intDataPtr->ctrlBufIndex - reqBufReads; //0x00001F90
             startBufIndex = (startBufIndex < 0) ? startBufIndex + CTRL_INTERNAL_CONTROLLER_BUFFERS : startBufIndex; //0x00001F98 & 0x00001F9C
             readIntBufs = reqBufReads;
         }
     }
     else {
+        dbg_printf("%d\n", __LINE__);
         suspendFlag = sceKernelCpuSuspendIntr(); //0x0000216C
         bufIndex = intDataPtr->ctrlBufIndex; //0x00002174
 
         startBufIndex = bufIndex; //0x00002184
+        dbg_printf("%d\n", __LINE__);
         if (reqBufReads < 64) { //0x00002178
+            dbg_printf("%d\n", __LINE__);
             startBufIndex = bufIndex - reqBufReads; //0x0000218C
             startBufIndex = (startBufIndex < 0) ? startBufIndex + CTRL_INTERNAL_CONTROLLER_BUFFERS : startBufIndex; //0x00001F98 & 0x00001F9C
             readIntBufs = reqBufReads; //0x00001FA0
         }
     }
+    dbg_printf("%d\n", __LINE__);
     if (arg3 != 0) { //0x00001FA4
         ctrlBuf = (SceCtrlDataExt *)intDataPtr->sceCtrlBuf[arg3] + startBufIndex; //0x00002160
     }
@@ -2027,6 +2038,7 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
         pspSetK1(oldK1); //0x000020B0
         return readIntBufs;
     }
+    dbg_printf("%d\n", __LINE__);
     /* read internal data buffers. */
     while (reqBufReads-- > 0) { //0x0000209C & 0x000020A0
            pad->activeTime = ctrlBuf->activeTime; //0x00001FE4 & 0x00001FF0
@@ -2099,6 +2111,7 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
                }
            }
     }
+    dbg_printf("%d\n", __LINE__);
 
     sceKernelCpuResumeIntr(suspendFlag); //0x000020A8
     pspSetK1(oldK1); //0x000020B0
@@ -2110,11 +2123,11 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
  * Exported in syslib
  */
 int CtrlInit(void) {
-    dbg_init(1, FB_NONE, FAT_AFTER_SYSCON);
+    dbg_init(1, FB_AFTER_DISPLAY, FAT_NONE);
     
     dbg_printf("Ctrl_Start: %s\n", __FUNCTION__);
     
-    sceCtrlInit();
+    //sceCtrlInit();
     return SCE_ERROR_OK;
 }
 
diff --git a/src/ctrl/ctrl_custom_VB_handler.c b/src/ctrl/ctrl_custom_VB_handler.c
index 4c88781..bf0939b 100644
--- a/src/ctrl/ctrl_custom_VB_handler.c
+++ b/src/ctrl/ctrl_custom_VB_handler.c
@@ -2121,7 +2121,7 @@ static int _sceCtrlReadBuf(SceCtrlDataExt *pad, u8 reqBufReads, int arg3, u8 mod
  * Exported in syslib
  */
 int CtrlInit(void) {
-    dbg_init(1, FB_NONE, FAT_AFTER_SYSCON);
+    dbg_init(1, FB_AFTER_DISPLAY, FAT_NONE);
     
     dbg_printf("Ctrl_Start: %s\n", __FUNCTION__);
     
diff --git a/src/iofilemgr/iofilemgr.c b/src/iofilemgr/iofilemgr.c
index 2e4330e..1bc9fba 100644
--- a/src/iofilemgr/iofilemgr.c
+++ b/src/iofilemgr/iofilemgr.c
@@ -727,6 +727,19 @@ int sceIoDevctl(const char *dev, unsigned int cmd, void *indata, int inlen, void
 
 int sceIoAssign(const char *dev, const char *blockDev, const char *fs, int mode, void* unk1, int unk2)
 {
+    int oldIntr;
+    asm("mfic %0, $0" : "=r" (oldIntr));
+    asm("mtic $zero, $0");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
+    asm("nop");
     dbg_printf("Calling %s\n", __FUNCTION__);
     dbg_printf("Calling %s\n", __FUNCTION__);
     dbg_printf("Calling %s\n", __FUNCTION__);
@@ -739,6 +752,7 @@ int sceIoAssign(const char *dev, const char *blockDev, const char *fs, int mode,
     dbg_printf("Calling %s\n", __FUNCTION__);
     dbg_printf("Calling %s\n", __FUNCTION__);
     dbg_printf("Calling %s\n", __FUNCTION__);
+    asm("mtic %0, $0" : : "r" (oldIntr));
     return 0;
     char outDev[32];
     char blkAliasName[32];